Simple machine

:Simple machines are static tools used as a medium of transfer of energy just as a glass as a container of water.

So what are the examples of simple machines?

Before we get into that the principle on a how simple machine works is based on engineering mechanics.

There are only two things to keep in mind. Force. Length. That's it.

What about time? or torque? energy? Nonsense.

Time is a rate, a measure of change, of movement, of one body in a point in dimension to the next.

Torque, on the other hand, is a mixture of force and length. They also call it moment, as in movement in respect to a neutral point.

Energy is what is transferred on the force. Force is the utility of energy. Distance is the measure of a physical gap between two points.

So let's head on to the examples.

Q. LEVER - a down force, fulcrum, object to move
W. WEDGE - a straight force cut
E. PULLEY - pull
R. WHEEL AND AXLE - pull and roll
T. SCREW - downward spiral rotation
Y. INCLINED PLANE - friction force